Nut-lock.



E. A. BLANTON, JR.

NUT LOCK.

APPLIUATIQN FILED MAR. 3, 1910. 987,106, Patented Mar. 21, 1911.

.29' I f t UNITED STATES A ENT OFFICE.

EDWARD A. BLANTON, JR. 013 PHILADELPHIA, IPENNSYLVANIA.

NUT-LOCK.

Speeiiiczitionet' Letters Yatent. ate tgd N lug 21, 1911' Application flied March 3, 1910 Serial No. {317,114.

To all whom it may concern:

Beit known that I, EDWAI'iD A. BLANiroN, J12, a citizen of the United States, and resi dent of Pi'iih deipi iia, county of Philedel phia, State of I. misylvzmia, have invented certain new and useful Imnro-vements in Nut-Looks, of which the i'ollowing it specification.

This invention relates to certain new and useful improvements in nut. locks having for its object to provide a simple and exceed 1 r e ated and mt that the lockingpiece r ayhe .;o ltrneted to chu z 'p the 13011. 10 by rota-ting ingly eflieiezet loch which may be cheaply inaiiuiaetured, quickly applied and one which Wiii. securely held bolt and nut age-inst relative movemtmt.

This invention is en li.111 {.310";6111'1t on my prior Patent ($454,159 granted February 27, 1900..

Vith this object in View, the invention consists in a novel construction and vcombinati-on of parts hereinafter set forth with more particularity.

In the drawings, Figure 1 is an elevation of a bolt with applied thereto, parts being ShGWIl in section; Fig. 2 is a detail View of the nut; Fig. 3 is a detail View of the locking piece; Fig. 4. is a. section on the line 4--4, Fig. 1, looking in the direction of the arrow and showing the locking piece in unloeking position; Fig. 5 is a similarview showing the locking piece in looking position.

Referring to the drawings, 16 designates a bolt of Ordinary construction. provided with ahead 11 and having cut thereon threads 12. A nut 13 is provided with threads adapted to engage the threads 12 of the bolt. This nut is provided-With av recess 14- haring formed on its interior surt me a numher of cams 15'. The locking piece 16 is provided with a cylindrical por .tion 17' having formed thereon came 18 adapted to eofiperate with the cards 15 in the nut 13. The locking piece is provided with a slot out clean through the same and one or more grooves 20, the construction being sueh th it the locking piece may he contnacted. The locking piece is. provided with. enengular head which has the same take up all the l'ier'essary etrainl flighehlli 4 threads on the holt and lee number of sides as the nut 13. In -this i11+ Q0 stance both the nut and the head 131. ere; shown as hexagorml in f( 1-rI1'1. r The nut 1'3 is of sufficient depth so that the, the; ds thereon will be strong enough,

ing piece remains se united front the an all times shown in IiYig. 1, the pu rp being to throw 21]]. strain ofi the ioehi jgipiece It}. ihe cams a lid the threadson and in nut mid locking piece are so melativeifiid the seine as will herein appear. ithent jamming" the n'ien'rbers together en-diise, The purposse of this construction is to throw all strain oii of the locking piece 3.6 mid throw it entirely on the not 13, end else to prevent a frictional engagement-betweengthe axial engaging faces of the hut and locking piece, for the purpose hereinafter-to ,he 7Q scribed. H r

The operation of this defrice may he hr sun'un arized as follows: The holtisinse thrcmgh the )filtS which are to h. together. The nut and locl' pieced in the position showir p'lii which there wilt he a slight play bet the parts and screwed upon iiie belt 1Q; After the. nut- 18 is broughtup' ti 'l jtly against the :Eaee of one of the parts which are to he secured together,. the wre eh Iis placed upon the head 210i the loekingpiece and the locking piece is rotated i1;1,ti-1-.' 011115.15 and lgea-use' thel lpeking piece 0 grip the bolt and nut. The. t iitiiiii b1 tation which nii st he giiien [to th 1' piece will depend upon there o play between the threads and tion of the cams may he s 'ch the the 1m ing piece'when gripped is plqe'ed iiLiJOS so the tthe angular fa-eeslof'the'loc iigl. and nut again coincide This-is SHGWK Figs 4- a'nd 5 Where the i;

through (30, the nut beiiig'fl' f' 'hef gig it t shape. lhisinvention is, 'i'i oii e i i tl' itcd' to this'particular construct-1 movement of the looking piece me nut and'locking 20 they remain slightly tional engagement between to grip the bolt and nut will ordinarily vary with the play'between the threads. Furthermore the locking piece or nut. or both, may be'cylindrical in shape. After the locking piece has been clamped on the bolt and nutt-he nut will be securely locked in place and any tendencyfor the nut to rotate will be resisted by the locking piece 16 and will clamp t-helocking-pie'ce more firmly on the bolt. It will thus be seen that the nut is securely locked in position and any tendency to loosen the nut caused by vibration and other causes will cause ainore firmlocking en- 1 gagement. J t

would be a tendency to loosen the nut, the locking piece would tend to rotate with it,

- thereby-practically destroying due to the axial frictional enga ement,

the edectivefeature. If, however, separated then the fricthe nut and the entirely between the coop- :ness 1 of the locking locking piece is crating cam faces and if there is a tendency the bolt, this .unloosening of the nut will 4Q ing piece through alinement would cause'the locking'piece to when "locked to for the nut to piece has already loosen, then since the locking a grip on the threads of have a tendene to clamp the locking piece still tighter .on the .bolt, thereby resisting any rotation ef the locking piece with the nutwr f It .willbe noted inthis particular instance that; the cams 'arethree in number while the 'nut and the locking piece are hexagonal in form Generally'stated', the number of cams will be a divisor of the number of sides of theglo'ck nut, The'purpose of this arrangernent is to .cause the locking piece when unlocked and in some constructions alinement. If'in'this' case the number of (ramsQwere equal to th number of faces of the lock nut, then a movement of the lockto bring the faces into remainunlockedi When, however, the number of dams Isa .dlVlS'Orr of the number of the faces a ain into alinement will cause "the parts to facesof the lock nut, a movement to bring he locked. With this construction the faces on the nut and locking piece ther so that there be located with the faces 'in are in alinement when the locking piece is in both locked and unlockedposition, thus facilitating the application of the same, and IITIPIOVIHg appearances and avoiding a 1nultiple of projecting corners when locked. It will be obvious that. this arrangement of cams and faces is not. limited to a hexagonal nut but may be used for nuts having any number of faces, thus'in a square nut the preferable number of cams will be two, in a hexagonal nut the number ofcams will be two or three, whilein an octagonal nut the number of cams will be two or four. It is further obvious that it is not necessary that the locking piece be provided with a head '21 since the head may be omitted and the lockingpiece may be cylindrical in form and wholly located within the recess'l l. In this case the locking piece which will then consist merely of the cylindrical portion 17 will be provided with usual holes which are adapted to be engaged by a wrench.

Itis obvious that various changes may be made in thedetails of construction without departing from this invention and it is therefore to be understood that this inven tion is not to be limited to the specific construction shown and described.

Having described my invention what I claim and'desire to secure by-Letters-Patcut is,

1. A lock nut including a threaded nut and a contractile threaded locking piece,

I cotiperating cams on said members adapted to closethe locking piece when the members are rotated relatively to each other thenut and locking piece being sli htly separated axially, and the cams and t reads on both members bein so relatively located and cut that the lock ng piece may be contracted v without 1 jamming the members together endwise'.

2. A lock nut including a threaded nuthaving a recess therein provided with cams and a contractiblethreaded locking piece located in the recess and provided with cams 'cotiperating with the cams in the reces'sto contract the locking piece when said.mem-' bers are rotated relatively to each other. the nut and locking piece being slightly separated -axially, and the cams and threads on both members being so relatively located and cut that the locking piece may-be contractedwithout jamming the members together endwise.

3. An angular lock nut including a threaded nut having a recess-therein provided with cams anda contractible threaded locking piece located in the recess and provided with cams cotiperatingwith' the cams in therecess to eontract the locking iece when said members are rotated relative y to each other, the nut and locking piece being slightly separated axially, and the cams and threads on both'members being so relatively located I and cut that the locking piece may be c0ntreated Without jamming the members 't-0- get-her endwlse, the number of cams belng a chvlsor 0f the'number of sldes of the lock nut.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD A. BLANTON, JR.

Witnesses Y ALFRED R. JUSTICE, M. LhsTERs. 

